JP3674711B2

JP3674711B2 - Subscriber transmission equipment

Info

Publication number: JP3674711B2
Application number: JP22770293A
Authority: JP
Inventors: 利秋園部
Original assignee: Fujitsu Ltd
Current assignee: Fujitsu Ltd
Priority date: 1993-09-14
Filing date: 1993-09-14
Publication date: 2005-07-20
Anticipated expiration: 2020-07-20
Also published as: EP0643524B1; DE69430412D1; JPH0787235A; DE69430412T2; EP0643524A1; US5457741A

Description

【０００１】
【産業上の利用分野】
本発明は、交換機局から遠隔の電話加入者に対して、電話サービスを提供するための加入者伝送装置に関し、特に電話使用率が低いときに、加入者側の伝送装置における電力供給を低減することが可能な、加入者伝送装置に関するものである。
【０００２】
加入者伝送装置は、複数の加入者端末を集線して交換機局と光伝送路等で接続するものであって、加入者端末が交換機局から遠隔地に存在する場合に、このような加入者を交換機に収容するための、加入者線の伝送損失と建設費用とを低減する目的で用いられるものである。
【０００３】
人口が少ない地域では、電話の使用率が低いため、加入者側の伝送装置への全電力供給を常時行うことは、経済的に不利である。そこで、このような場合、特定の加入者数に見合った分だけ電力供給を行うようにして、消費電力量を低減できるようにすることが望ましい。
【０００４】
【従来の技術】
図７は、従来の加入者伝送装置を示したものである。図中、１１は交換機、１２は交換機側の伝送装置、１３は交換機１１および伝送装置１２に対する局電源を示し、これらは交換機局に設けられる。１４は加入者を示し、１５は加入者側の伝送装置、１６は伝送装置１５の各部に対する電源供給用のＡＣ／ＤＣ変換器であって、これらは、交換機局から離れた地域に存在する。１７は光信号等の伝送路であって、伝送装置１２，１５間を接続する。
【０００５】
交換機側の伝送装置１２において、１８は加入者送受信装置、１９は信号多重および非多重化装置、２０は伝送信号送受信装置である。加入者送受信装置１８は、交換機１１との間で、音声信号および各種制御信号の送受信を行う。信号多重および非多重化装置１９は、加入者送受信装置１８の信号を多重して伝送信号送受信装置２０に接続し、また伝送信号送受信装置２０からの多重信号を分離して、加入者送受信装置１８に接続する。伝送信号送受信装置２０は、信号多重および非多重化装置１９と伝送路１７との間で、多重信号の送受信を行う。
【０００６】
加入者側の伝送装置１５において、２１は加入者送受信装置、２２は信号多重および非多重化装置、２３は伝送信号送受信装置である。加入者送受信装置２１は、加入者１４との間で、音声信号および各種制御信号の送受信を行う。信号多重および非多重化装置２２は、加入者送受信装置２１の信号を多重して伝送信号送受信装置２３に接続し、また伝送信号送受信装置２３からの多重信号を分離して、加入者送受信装置２１に接続する。伝送信号送受信装置２３は、信号多重および非多重化装置２２と伝送路１７との間で、多重信号の送受信を行う。
【０００７】
【発明が解決しようとする課題】
図７に示された従来の加入者伝送装置においては、加入者側の伝送装置１５における加入者送受信装置２１が、すべて加入者に接続されているため、常時、全装置に電力を供給するようにしていた。
【０００８】
しかしながら、加入者伝送装置においては、加入者側の伝送装置に接続される加入者の電話使用率が低いことが多い。そのため、すべての加入者送受信装置に電力を供給することは、装置の使用率との関係で、電力供給の無駄があるという問題があった。
【０００９】
本発明は、このような従来技術の課題を解決しようとするものであって、加入者伝送装置において、加入者側の伝送装置における電話の使用率が低いときに、加入者送受信装置に対して特定の加入者数分だけ電力を供給するようにして、電力消費量の低減を可能にすることを目的としている。
【００１０】
【課題を解決するための手段】
(1) 複数の加入者を収容する加入者側の伝送装置と、交換機に接続された伝送装置とを、多重化された伝送路で接続する加入者伝送装置における、前記加入者側の伝送装置に、発呼信号と着呼信号とをそれぞれ保持するメモリと、加入者線の信号を送受信する加入者送受信装置と、電話の使用率が所定の値より低いとき、前記加入者送受信装置における特定の加入者数に対応する加入者送受信装置のみを稼働状態に設定し、該稼動状態に設定されなかった加入者送受信装置の動作を停止させるよう、加入者送受信装置への給電を切換え、該給電の切替え時に前記メモリを動作させ、該メモリを経由して発呼信号と着呼信号とを前記加入者送受信装置に接続する制御装置とを設け、加入者側の伝送装置における特定の加入者数に対応する回路のみに電力を供給する。
【００１１】
(2) 加入者線の信号を送受信する回路を複数の加入者に対応して備えた加入者送受信装置と、該加入者送受信装置の送受信信号を多重・分離する信号多重および非多重化装置と、該信号多重および非多重化装置の多重・分離する信号を送受信する伝送信号送受信装置とを備えた加入者側の伝送装置と、交換機との間で信号を送受信する回路を複数の加入者に対応して備えた加入者送受信装置と、該加入者送受信装置の送受信信号を多重・分離する信号多重および非多重化装置と、該信号多重および非多重化装置の多重・分離する信号を送受信する伝送信号送受信装置とを備えた交換機側の伝送装置とを有し、前記加入者側の伝送装置の伝送信号送受信装置と交換機側の伝送装置の伝送信号送受信装置とを伝送路を介して接続する加入者伝送装置における前記加入者側の伝送装置において、
前記加入者側の伝送装置の加入者送受信装置から発呼する信号を一時保持するメモリを該加入者送受信装置の前段に設け、該加入者送受信装置へ着呼する信号を一時保持するメモリを該加入者送受信装置の後段に設けるとともに、電話の使用率が所定の値より低いとき、該加入者送受信装置における特定の加入者数に対応する加入者送受信装置のみを稼働状態に設定し、該稼動状態に設定されなかった加入者送受信装置の動作を停止させるよう、加入者送受信装置への給電を切換え、該給電の切替え時に前記メモリを動作させ、該メモリを経由して発呼信号と着呼信号とを前記加入者送受信装置に接続する制御装置と
を設け、加入者側の伝送装置における特定の加入者数に対応する回路のみに電力を供給するようにする。
【００１２】
(3) (1) または(2) において、前記制御装置が、外部からの制御情報に応じて特定の加入者数に対応する加入者送受信装置を稼動状態に設定する切替えを行うサービス切替スイッチと、該サービス切替スイッチの切り替えに応じて、メモリにおける動作位相を制御する位相調整部と、該位相調整部からの位相調整に応じて、メモリにおける書き込み，読み出しのタイミングを制御するタイミング制御部と、該サービス切替スイッチの切り替えに応じて、加入者送受信装置中における、前記特定の加入者数に対応する加入者送受信装置を稼動状態に設定する切替命令を発生する送受信機切替命令部とを備える。
【００１３】
(4) (3) において、前記サービス切替スイッチに対する制御情報が、交換機側の伝送装置から多重信号によって伝送され、加入者側の伝送装置において信号多重および非多重化装置において分離されて、制御装置に与えられる。
【００１４】
(5) (1) または(2) において、前記特定の加入者数に対応する加入者送受信装置のみを稼働状態に設定し、他の加入者送受信装置の動作を停止させ、前記メモリを動作させる制御情報を発生する制御装置を交換機側の伝送装置に設けるとともに、該伝送装置から該制御情報を多重信号によって伝送し、加入者側の伝送装置において、信号多重および非多重化装置において分離した該制御情報に基づいて前記各制御を行う。
【００１５】
(6) (1) または(2) において、前記加入者側の伝送装置を動作させるＤＣ電源を供給するＡＣ／ＤＣ変換器における商用電源の停電時にバッテリから該ＤＣ電源を供給するとともに、該バッテリ電源供給時、前記制御装置が前記特定の加入者数に対応する加入者送受信装置のみを稼働状態に設定し、他の加入者送受信装置の動作を停止させ、前記メモリを動作させるように制御する電力供給制御装置を設ける。
【００１６】
(7) (6) において、前記電力供給制御装置が、前記ＡＣ／ＤＣ変換器からのＤＣ電源の断を検出する電源監視部と、該ＤＣ電源断の検出によってバッテリからＤＣ電源を供給するバッテリ切替部と、ＡＣ／ＤＣ変換器からのＤＣ電源またはバッテリ切替部からのＤＣ電源を伝送装置内に配電する電力配電部と、外部からの制御情報に応じて、前記電源監視部においてＡＣ／ＤＣ変換器からのＤＣ電源を遮断し、バッテリ切替部においてバッテリからＤＣ電源を供給し、電力配電部においてバッテリ切替部からのＤＣ電源を伝送装置内に配電するように制御する電源切替部とを備える。
【００１７】
(8) (7) において、前記電源切替部に対する制御情報が、交換機側の伝送装置から多重信号によって伝送され、加入者側の伝送装置において信号多重および非多重化装置において分離されて、前記電力供給制御装置に与えられる。
【００１８】
【作用】
(1) 本発明において対象とする加入者伝送装置は、複数の加入者１４を収容する加入者側の伝送装置１５と、交換機１１に接続された伝送装置１２とを、多重化された伝送路１７によって接続するものである。
【００１９】
この場合、加入者側の伝送装置１５に、発呼信号と着呼信号とをそれぞれ保持するメモリ２５，２６と、加入者線の信号を送受信する加入者送受信装置２１中の、特定の加入者数に対応する加入者送受信装置２１Ａのみを稼働状態にするとともに、メモリ２５，２６を動作させる制御装置２９とを設ける。
【００２０】
従って、電話の使用率が低いとき、制御装置２９によってこのような制御を行うことによって、加入者側の伝送装置１５における特定の加入者数に対応する回路のみに電力を供給することができ、加入者側の伝送装置１５を低消費電力化することができる。
【００２１】
(2) 本発明において対象とする加入者伝送装置は、加入者側の伝送装置１５において、加入者線の信号を送受信する回路を複数の加入者１４に対応して備えた加入者送受信装置２１と、この加入者送受信装置の送受信信号を多重・分離する信号多重および非多重化装置２２と、この信号多重および非多重化装置の多重・分離する信号を送受信する伝送信号送受信装置２３とを備えるとともに、交換機側の伝送装置１２において、交換機１１との間で信号を送受信する回路を複数の加入者に対応して備えた加入者送受信装置１８と、この加入者送受信装置の送受信信号を多重・分離する信号多重および非多重化装置１９と、この信号多重および非多重化装置の多重・分離する信号を送受信する伝送信号送受信装置２０とを備えて、伝送信号送受信装置２３と伝送信号送受信装置２０とを伝送路１７を介して接続するものである。
【００２２】
この場合に、メモリ２５を加入者送受信装置２１の前段に設けて、加入者送受信装置２１から発呼する信号を一時保持し、メモリ２６を加入者送受信装置２１の後段に設けて、加入者送受信装置２１へ着呼する信号を一時保持するとともに、制御装置２９を設けて、加入者送受信装置２１における特定の加入者数に対応する加入者送受信装置２１Ａのみを稼働状態に設定し、メモリ２５，２６を動作させるように制御を行う。
【００２３】
従って、電話の使用率が低いとき、制御装置２９によってこのような制御を行うことによって、加入者側の伝送装置１５における特定の加入者数に対応する回路のみに電力を供給することができ、加入者側の伝送装置１５を低消費電力化することができる。
【００２４】
(3) (1) または(2) の場合に、制御装置２９を、外部からの制御情報に応じて特定の加入者数に対応する加入者送受信装置２１Ａを設定する切替えを行うサービス切替スイッチ４１と、サービス切替スイッチ４１の切り替えに応じて、メモリ２５，２６における動作位相を制御する位相制御部４２と、位相制御部４２からの位相制御に応じて、メモリ２５，２６における書き込み，読み出しのタイミングを制御するタイミング制御部４３，４４と、サービス切替スイッチ４１の切り替えに応じて、加入者送受信装置２１中における、特定の加入者数に対応する加入者送受信装置２１Ａを設定する切替命令を発生する送受信機切替命令部４５とを設けることによって実現することができる。
【００２５】
(4) (3) の場合に、サービス切替スイッチ４１に対する制御情報を、交換機側の伝送装置１２から多重信号によって伝送し、加入者側の伝送装置１５において、信号多重および非多重化装置２２で多重信号から分離して、制御装置２９に与えるようにすることができる。
【００２６】
(5) (1) または(2) の場合に、制御装置３１を交換機側の伝送装置１２に設けて、特定の加入者数に対応する加入者送受信装置２１Ａのみを稼働状態に設定し、メモリ２５，２６を動作させる制御情報を発生するとともに、伝送装置１２からこの制御情報を多重信号によって伝送し、加入者側の伝送装置１５において、信号多重および非多重化装置２２でこの制御情報を分離して、この制御情報に基づいて各制御を行うようにすることができる。
【００２７】
(6) (1) または (2)の場合に、加入者側の伝送装置１５に電力供給制御装置３３を設けて、ＡＣ／ＤＣ変換器１６に対する商用電源の停電時にバッテリ３２からＤＣ電源を供給するとともに、この状態で、制御装置２９が特定の加入者数に対応する加入者送受信装置２１Ａのみを稼働状態に設定し、メモリ２５，２６を動作させるように制御を行わせることができる。
【００２８】
(7) (6) の場合に、電力供給制御装置３３を、ＡＣ／ＤＣ変換器１６からのＤＣ電源の断を検出する電源監視部５１と、このＤＣ電源断の検出によってバッテリ３２からＤＣ電源を供給するバッテリ切替部５２と、ＡＣ／ＤＣ変換器１６からのＤＣ電源またはバッテリ切替部５２からのＤＣ電源を伝送装置１５内に配電する電力配電部５３と、外部からの制御情報に応じて、電源監視部５１においてＡＣ／ＤＣ変換器１６からのＤＣ電源を遮断し、バッテリ切替部５２においてバッテリ３２からＤＣ電源を供給し、電力配電部５３においてバッテリ切替部５２からのＤＣ電源を伝送装置１５内に配電するように制御する電源切替部５４とを設けることによって実現することができる。
【００２９】
(8) (7) の場合に、電源切替部５４に対する制御情報を、交換機側の伝送装置１２から多重信号によって伝送し、加入者側の伝送装置１５において、信号多重および非多重化装置２２で多重信号から分離して、電力供給制御装置３３に与えるようにすることができる。
【００３０】
【実施例】
図２は、本発明の実施例（１）を示したものであって、加入者側の伝送装置において所要の制御を行う場合を示し、図７におけると同じものを同じ番号で示している。２１Ａは加入者送受信装置２１中の特定部分の加入者送受信装置を示し、２５，２６はメモリである。また２７，２８は、メモリ２５，２６と加入者送受信装置２１Ａを結ぶ、回線制御された加入者信号線である。
【００３１】
２９は制御装置であって、メモリ２５，２６の動作および加入者送受信装置２１Ａの設定を制御する。３０は電力供給制御装置であって、伝送装置１５内における各部に対する電力の供給を制御する。
【００３２】
図２に示された実施例においては、制御装置２９は、電話の使用率が低いときは、加入者送受信装置２１中に、特定の加入者数分に対応する加入者送受信装置２１Ａを設定する。このような設定は、発呼または通話中においても行われることがあり、そのため、加入者側および交換機側にそれぞれメモリを備えて、加入者または交換機からの発呼信号および音声信号を一時的に保持する。なお、この状態では、加入者送受信装置２１中における、特定の加入者送受信装置２１Ａとして設定されなかった加入者送受信装置は、動作を停止し電力を消費しない。
【００３３】
この状態では、加入者１４からの発呼信号に対しては、これをメモリ２５に一時的に保持し、また信号多重および非多重化装置２２において分離された着呼信号に対しては、これをメモリ２６に一時的に保持して、回線制御された加入者信号線２７，２８を経て加入者送受信装置２１Ａに接続する。加入者送受信装置２１Ａの設定が終了したのちは、発呼信号および音声信号は、メモリを経由することなく、直接、加入者送受信装置２１Ａに接続される。
【００３４】
電力供給制御装置３０は、常時は，伝送信号送受信装置２３，信号多重および非多重化装置２２および加入者送受信装置２１に対して、ＡＣ／ＤＣ変換器１６からのＤＣ電源を供給する。電話の使用率が低いときは、制御装置２９の制御に応じて設定された、特定の加入者数に対応する加入者送受信装置２１ＡのみにＤＣ電源を供給する。
【００３５】
従って、図２に示された実施例によれば、加入者側の伝送装置において、電話の使用率が低いとき、稼働する加入者送受信装置の数を少なくできるので、加入者側の伝送装置における消費電力を低減することができる。
【００３６】
図３は、図２の実施例における制御装置の構成例を示したものである。図中、４１はサービス切替スイッチであって、外部からの制御情報に応じて、電話の使用率が低いとき、特定の加入者数に対応する加入者送受信装置２１Ａを設定する切替えを行う。サービス切替スイッチ４１に対する制御情報は、例えば交換機側の伝送装置１２から多重信号として伝送路１７を経て送られて、加入者側の伝送装置１５において信号多重および非多重化装置２２において分離されて、制御装置２９に与えられる。
【００３７】
４２は位相調整部であって、サービス切替スイッチ４１の切り替えに応じて、メモリ２５および２６における動作位相を調整する。４３，４４はタイミング制御部であって、位相調整部４２からの位相調整に応じて、メモリ２５および２６における書き込み，読み出しのタイミングを制御する。
【００３８】
４５は送受信機切替命令部であって、加入者送受信装置２１中における、特定の加入者数に対応する加入者送受信装置２１Ａを設定する切替命令を発生する。４６はインタフェース部であって、タイミング制御部４３，４４からのタイミング制御情報を、メモリ２５，２６に送出し、送受信機切替命令部４５からの切替命令を加入者送受信装置２１に伝達する。
【００３９】
図４は、本発明の実施例（２）を示したものであって、加入者側の伝送装置が無人局に設置されるような場合に、交換機側の伝送装置から所要の制御を行う場合を示し、図２および図７におけると同じものを同じ番号で示している。３１は制御装置であって、図２の実施例に示された制御装置２９と同様な構成を有しており、制御信号に基づくサービス切替スイッチの切替えに応じて、インタフェース部から、メモリ２５，２６に対するタイミング制御情報および加入者送受信装置２１に対する切替命令を発生して、信号多重および非多重化装置１９に入力する。
【００４０】
これらのタイミング制御情報および切替命令は、信号多重および非多重化装置１９において、多重信号に変換されて、伝送信号上に付加信号として挿入されて、伝送信号送受信装置２０から伝送路１７を経て伝送装置１５へ送られる。伝送装置１５においては、信号多重および非多重化装置２２においてこれらの情報を分離して、メモリ２５，２６および加入者送受信装置２１に与える。
【００４１】
これによって、メモリ２５および２６における書き込み，読み出しのタイミング制御が行われるとともに、加入者送受信装置２１中における、特定の加入者数に対応する加入者送受信装置２１Ａの設定が行われる。従って図４の実施例によれば、図２に示された実施例と同様にして、電話の使用率が低いとき、稼働する加入者送受信装置の数を少なくすることができるので、加入者側の伝送装置における消費電力を低減することができる。
【００４２】
図５は、本発明の実施例（３）を示したものであって、加入者側の伝送装置においてバッテリを非常電源として有する場合に、本発明を適用して所要の制御を行う場合を示し、図２におけると同じものを同じ番号で示している。３２はバッテリであって、非常電源として動作する。３３は電力供給制御装置であって、伝送装置１５内における各部に対する電力の供給を制御する。
【００４３】
電力供給制御装置３３は、常時は、商用電源に基づくＡＣ／ＤＣ変換器１６からのＤＣ電源を、伝送装置１５内の各部に供給している。バッテリ３２は、ＡＣ／ＤＣ変換器１６からのＤＣ電源によって常時、充電されている。
【００４４】
商用電源が断になると、電力供給制御装置３３はＡＣ／ＤＣ変換器１６からのＤＣ電源の断によってこれを検出して、バッテリ３２を接続してこれからＤＣ電源を伝送装置１５内に供給する。これと同時に制御装置２９に対して指令を送って、加入者送受信装置２１中における、特定の加入者数に対応する加入者送受信装置２１Ａのみを稼働状態にする設定を行わせる。
【００４５】
これによって、伝送装置１５において低電力運転が行われるので、バッテリ３２の電力消費を低減することができ、バッテリ３２での、使用可能時間を延長することができる。
【００４６】
図６は、図５の実施例における電力供給制御装置の構成例を示したものである。図中、５１は電源監視部であって、ＡＣ／ＤＣ変換器１６からのＤＣ電源の断を検出する。５２はバッテリ切替部であって、電源監視部５１でＡＣ／ＤＣ変換器１６からのＤＣ電源の断が検出されたとき、バッテリ３２からＤＣ電源を供給する。５３は電力配電部であって、ＡＣ／ＤＣ変換器１６からのＤＣ電源またはバッテリ切替部５２からのＤＣ電源を伝送装置１５内の各部に配電する。
【００４７】
なお、外部からの制御によって、強制的にＡＣ／ＤＣ変換器１６からのＤＣ電源に代えて、バッテリ切替部５２からのＤＣ電源を伝送装置１５内に配電することもできる。図６において、５４は電源切替部であって、外部からの制御情報に応じて、電源監視部５１を制御して、ＡＣ／ＤＣ変換器１６からのＤＣ電源を遮断させ、バッテリ切替部５２を制御してバッテリ３２からＤＣ電源を供給する状態に切替えさせ、電力配電部５３を制御して、バッテリ切替部５２からのＤＣ電源が伝送装置１５内に与えるようにさせる。
【００４８】
電源切替部５４を制御する制御情報は、加入者側の伝送装置１５が無人局に設置されるような場合には、交換機側の伝送装置１２から多重信号によって伝送し、加入者側の伝送装置１５において、信号多重および非多重化装置２２でこれを多重信号から分離して、電力供給制御装置３３に与えるようにする。
【００４９】
【発明の効果】
以上説明したように本発明によれば、複数の加入者端末を集線して交換機局と光伝送路等で接続する加入者伝送装置において、電話使用率が低いときに、加入者側の伝送装置における電力供給を低減することが可能となる。
【図面の簡単な説明】
【図１】本発明の原理的構成を示す図である。
【図２】本発明の実施例（１）を示す図である。
【図３】図２の実施例における制御装置の構成例を示す図である。
【図４】本発明の実施例（２）を示す図である。
【図５】本発明の実施例（３）を示す図である。
【図６】図５の実施例における電力供給制御装置の構成例を示す図である。
【図７】従来の加入者伝送装置を示す図である。
【符号の説明】
１１交換機
１２伝送装置
１４加入者
１５伝送装置
１６ＡＣ／ＤＣ変換器
１７伝送路
１８加入者送受信装置
１９信号多重および非多重化装置
２０伝送信号送受信装置
２１加入者送受信装置
２１Ａ加入者送受信装置
２２信号多重および非多重化装置
２３伝送信号送受信装置
２５メモリ
２６メモリ
２９制御装置
３１制御装置
３２バッテリ
３３電力供給制御装置
４１サービス切替スイッチ
４２位相調整部
４３タイミング制御部
４４タイミング制御部
４５送受信機切替命令部
５１電源監視部
５２バッテリ切替部
５３電力配電部
５４電源切替部[0001]
[Industrial application fields]
The present invention relates to a subscriber transmission device for providing a telephone service to a telephone subscriber remote from an exchange station, and particularly reduces the power supply in the transmission device on the subscriber side when the telephone usage rate is low. The present invention relates to a subscriber transmission device.
[0002]
A subscriber transmission device collects a plurality of subscriber terminals and connects them to an exchange station via an optical transmission line or the like. When the subscriber terminal exists at a remote location from the exchange station, such a subscriber transmission apparatus is used. Is used for the purpose of reducing transmission loss and construction cost of the subscriber line for accommodating the mobile phone in the exchange.
[0003]
In areas where the population is small, the telephone usage rate is low, so it is economically disadvantageous to always supply all power to the transmission equipment on the subscriber side. Therefore, in such a case, it is desirable to reduce the power consumption by supplying the power corresponding to the specific number of subscribers.
[0004]
[Prior art]
FIG. 7 shows a conventional subscriber transmission apparatus. In the figure, 11 is an exchange, 12 is a transmission device on the exchange side, 13 is a station power supply for the exchange 11 and the transmission device 12, and these are provided in the exchange station. Reference numeral 14 denotes a subscriber, 15 denotes a transmission device on the subscriber side, and 16 denotes an AC / DC converter for supplying power to each part of the transmission device 15, which exist in an area away from the exchange station. Reference numeral 17 denotes a transmission path for an optical signal or the like, which connects between the transmission apparatuses 12 and 15.
[0005]
In the transmission apparatus 12 on the exchange side, 18 is a subscriber transmission / reception apparatus, 19 is a signal multiplexing / demultiplexing apparatus, and 20 is a transmission signal transmission / reception apparatus. The subscriber transmission / reception device 18 transmits / receives voice signals and various control signals to / from the exchange 11. The signal multiplexing / demultiplexing device 19 multiplexes the signal of the subscriber transmission / reception device 18 and connects it to the transmission signal transmission / reception device 20, and separates the multiplexed signal from the transmission signal transmission / reception device 20, thereby substituting the subscriber transmission / reception device 18. Connect to. The transmission signal transmission / reception device 20 performs transmission / reception of multiplexed signals between the signal multiplexing / demultiplexing device 19 and the transmission path 17.
[0006]
In the transmission apparatus 15 on the subscriber side, 21 is a subscriber transmission / reception apparatus, 22 is a signal multiplexing / demultiplexing apparatus, and 23 is a transmission signal transmission / reception apparatus. The subscriber transmission / reception device 21 transmits / receives voice signals and various control signals to / from the subscriber 14. The signal multiplexing / demultiplexing device 22 multiplexes the signal of the subscriber transmission / reception device 21 and connects it to the transmission signal transmission / reception device 23, and separates the multiplexed signal from the transmission signal transmission / reception device 23, thereby substituting the subscriber transmission / reception device 21. Connect to. The transmission signal transmission / reception device 23 performs transmission / reception of multiplexed signals between the signal multiplexing / demultiplexing device 22 and the transmission path 17.
[0007]
[Problems to be solved by the invention]
In the conventional subscriber transmission device shown in FIG. 7, supplied by the subscriber transceiver unit 2 1 in the transmission apparatus 15 of the subscriber side, because all are connected to the subscriber, always the power to the entire device It was like that.
[0008]
However, in the subscriber transmission device, the telephone usage rate of the subscriber connected to the transmission device on the subscriber side is often low. Therefore, supplying power to all subscriber transmission / reception devices has a problem of wasteful power supply due to the usage rate of the devices.
[0009]
The present invention is intended to solve the above-described problems of the prior art. In the subscriber transmission apparatus, when the telephone usage rate in the transmission apparatus on the subscriber side is low, the subscriber transmission / reception apparatus is An object of the present invention is to reduce power consumption by supplying power for a specific number of subscribers.
[0010]
[Means for Solving the Problems]
(1) a plurality of subscriber-side transmission apparatus that accommodates a subscriber, and a transmission device connected to the exchange, at the subscriber transmission system for connecting a transmission path multiplexed, the subscriber side of the transmission device In addition, when the usage rate of the telephone is lower than a predetermined value , a memory for holding a call signal and a call signal respectively, a subscriber transmission / reception device for transmitting / receiving a signal of a subscriber line, and a specification in the subscriber transmission / reception device Only the subscriber transmission / reception devices corresponding to the number of subscribers are set to the active state, and the power supply to the subscriber transmission / reception devices is switched so as to stop the operation of the subscriber transmission / reception devices not set to the active state. A control device for operating the memory at the time of switching and connecting a call signal and a call signal to the subscriber transmission / reception device via the memory, and a specific number of subscribers in the transmission device on the subscriber side Only the circuit corresponding to To supply power.
[0011]
(2) A subscriber transmitter / receiver provided with a circuit for transmitting / receiving a signal of a subscriber line corresponding to a plurality of subscribers, and a signal multiplexing / demultiplexing device for multiplexing / demultiplexing transmission / reception signals of the subscriber transmitter / receiver, the subscriber side of a transmission apparatus and a transmission signal transmitter-receiver for transmitting and receiving signals to multiplexing and demultiplexing of the signal multiplexing and demultiplexing device, a circuit for transmitting and receiving signals to and from the exchange to a plurality of subscribers transmitting and receiving a subscriber transceiver having correspondingly, a signal multiplexing and demultiplexing device for multiplexing and demultiplexing transmitted and received signals of the subscriber transmitter-receiver, a signal multiplexing and demultiplexing of the signal multiplexing and demultiplexing device and a transmission signal transmitter-receiver and the transmission device of the exchange side having a connects the transmission signal transmitting and receiving device of the transmission device of the transmission signal transmitting and receiving device and the exchange side of the transmission apparatus of the subscriber side via a transmission line Subscriber transmission equipment In the transmission apparatus on the subscriber side in
Provided a memory for temporarily holding a signal calling from the subscriber transceiver of the transmission device of the subscriber side in front of the subscriber transceiver, said memory for temporarily holding a signal called the the subscriber transceiver When the telephone usage rate is lower than a predetermined value, only the subscriber transceiver device corresponding to a specific number of subscribers in the subscriber transceiver device is set to the operating state and the operation is performed. In order to stop the operation of the subscriber transmission / reception apparatus not set to the state, the power supply to the subscriber transmission / reception apparatus is switched, the memory is operated at the time of switching the power supply, and the calling signal and the incoming call are transmitted via the memory. A control device for connecting a signal to the subscriber transceiver device;
To supply power only to a circuit corresponding to a specific number of subscribers in the transmission apparatus on the subscriber side.
[0012]
(3) In (1) or (2), wherein the controller, and the service switching switch for switching it to be set in the operation state subscriber transceiver corresponding to a specific number of subscribers in response to control information from outside , according to the switching of the service selector switch, and a phase adjustment unit for controlling the operating phase in memories in response to phase adjustment from the phase adjustment unit, a timing controller for controlling writing in the memory, the timing of the read, in accordance with the switching of the service selector switch, comprising in the subscriber transceiver, and a transceiver changeover instruction unit for generating a switching instruction that sets the operating state of the subscriber transceiver device corresponding to the specific number of subscribers.
[0013]
(4) In (3), the control information for the service selector switch is transmitted by multiplex signal from the transmission device of the exchange side, it is separated in the signal multiplexing and demultiplexing apparatus in the transmission apparatus of the subscriber side, the control device Ru given.
[0014]
(5) (1) or (2), only the subscriber transmitter-receiver corresponding to the specific number of subscribers is set in the operational state, stops the operation of the other subscriber transceiver, operating the memory is provided on the transmission device exchange side control device for generating control information, the control information transmitted by multiplex signal from the transmission device, the transmission apparatus of the subscriber side, separate the signal multiplexing and demultiplexing apparatus the Each control is performed based on the control information.
[0015]
(6) (1) or (2), and supplies the DC power from the battery during a power failure of the commercial power supply in the AC / DC converter for supplying DC power to operate the transmission apparatus of the subscriber side, the battery when power supply to set only the subscriber transmitter-receiver wherein the controller corresponds to the specific number of subscribers in the operational state, stops the operation of the other subscriber transceiver, and controls to operate the memory A power supply control device is provided.
[0016]
(7) In (6), said power supply control device, a power supply monitoring unit for detecting a disconnection of the DC power from the AC / DC converter, a battery for supplying DC power from the battery by the detection of said DC power failure a switching unit, and a power distribution unit for distributing power in a transmission apparatus DC power from the DC power supply or battery switching unit from AC / DC converter, in accordance with the control information from an external, AC / DC in the power monitoring section A power switching unit that cuts off the DC power from the converter, supplies the DC power from the battery in the battery switching unit, and controls the power distribution unit to distribute the DC power from the battery switching unit in the transmission device. .
[0017]
(8) (7), the control information for the power supply switching unit, is transmitted by the multiplex signal from the transmission device of the exchange side, it is separated in the signal multiplexing and demultiplexing apparatus in the transmission apparatus of the subscriber side, the power Provided to the supply control device.
[0018]
[Action]
(1) A subscriber transmission apparatus targeted in the present invention is a transmission line in which a transmission apparatus 15 on the subscriber side accommodating a plurality of subscribers 14 and a transmission apparatus 12 connected to the exchange 11 are multiplexed. 17 is connected.
[0019]
In this case, a specific subscriber in the subscriber's transmission device 15 is stored in the memories 25 and 26 for holding outgoing and incoming call signals, and in the subscriber's transmission / reception device 21 for transmitting and receiving subscriber line signals. Only the subscriber transmission / reception device 21A corresponding to the number is put into an operating state, and a control device 29 for operating the memories 25 and 26 is provided.
[0020]
Therefore, when the usage rate of the telephone is low, by performing such control by the control device 29, it is possible to supply power only to a circuit corresponding to a specific number of subscribers in the transmission device 15 on the subscriber side, It is possible to reduce the power consumption of the transmission device 15 on the subscriber side.
[0021]
(2) The subscriber transmission apparatus targeted in the present invention is a subscriber transmission / reception apparatus 21 provided with a circuit for transmitting / receiving a signal of a subscriber line corresponding to a plurality of subscribers 14 in the transmission apparatus 15 on the subscriber side. A signal multiplexing / demultiplexing device 22 that multiplexes / demultiplexes transmission / reception signals of the subscriber's transmission / reception device, and a transmission signal transmission / reception device 23 that transmits / receives signals multiplexed / demultiplexed by the signal multiplexing / demultiplexing device. At the same time, in the transmission apparatus 12 on the exchange side, a subscriber transmission / reception apparatus 18 provided with a circuit for transmitting / receiving signals to / from the exchange 11 corresponding to a plurality of subscribers, and transmission / reception signals of this subscriber transmission / reception apparatus are multiplexed. A signal multiplexing / demultiplexing device 19 for separating and a transmission signal transmitting / receiving device 20 for transmitting / receiving signals to be multiplexed / demultiplexed by the signal multiplexing / demultiplexing device are provided. The device 23 and the transmission signal transmitting / receiving device 20 are connected via the transmission line 17.
[0022]
In this case, the memory 25 is provided in the front stage of the subscriber transmission / reception device 21 to temporarily hold a signal originated from the subscriber transmission / reception device 21, and the memory 26 is provided in the rear stage of the subscriber transmission / reception device 21. In addition to temporarily holding a signal for receiving an incoming call to the device 21, a control device 29 is provided to set only the subscriber transmitting / receiving device 21A corresponding to a specific number of subscribers in the subscriber transmitting / receiving device 21 to an operating state, Control is performed so as to operate H.26.
[0023]
Therefore, when the usage rate of the telephone is low, by performing such control by the control device 29, it is possible to supply power only to a circuit corresponding to a specific number of subscribers in the transmission device 15 on the subscriber side, It is possible to reduce the power consumption of the transmission device 15 on the subscriber side.
[0024]
(3) In the case of (1) or (2), the service selector switch 41 that switches the control device 29 to set the subscriber transceiver device 21A corresponding to a specific number of subscribers according to control information from the outside. And a phase control unit 42 that controls the operation phase in the memories 25 and 26 according to the switching of the service selector switch 41, and a write / read timing in the memories 25 and 26 according to the phase control from the phase control unit 42. In response to the switching of the timing control units 43 and 44 for controlling the service and the service selector switch 41, a switching command for setting the subscriber transceiver device 21A corresponding to a specific number of subscribers in the subscriber transceiver device 21 is generated. This can be realized by providing the transmitter / receiver switching command unit 45.
[0025]
(4) In the case of (3), control information for the service changeover switch 41 is transmitted from the transmission apparatus 12 on the exchange side as a multiplexed signal, and the signal multiplexing and demultiplexing apparatus 22 in the transmission apparatus 15 on the subscriber side. It can be separated from the multiplexed signal and given to the control device 29.
[0026]
(5) In the case of (1) or (2), the control device 31 is provided in the transmission device 12 on the exchange side, and only the subscriber transmission / reception device 21A corresponding to a specific number of subscribers is set in the operating state, and the memory Control information for operating 25 and 26 is generated, and this control information is transmitted from the transmission device 12 as a multiplexed signal. In the transmission device 15 on the subscriber side, the control information is separated by the signal multiplexing and demultiplexing device 22. Thus, each control can be performed based on this control information.
[0027]
(6) In the case of (1) or (2), a power supply control device 33 is provided in the transmission device 15 on the subscriber side, and DC power is supplied from the battery 32 when the commercial power supply to the AC / DC converter 16 is interrupted. In addition, in this state, the control device 29 can set only the subscriber transmission / reception device 21A corresponding to the specific number of subscribers to the operating state and perform control so that the memories 25 and 26 are operated.
[0028]
(7) In the case of (6), the power supply control device 33 is connected to the power supply monitoring unit 51 that detects the disconnection of the DC power supply from the AC / DC converter 16 and the DC power supply from the battery 32 by the detection of the DC power supply disconnection. According to the control information from the outside, the battery switching unit 52 that supplies the power, the power distribution unit 53 that distributes the DC power from the AC / DC converter 16 or the DC power from the battery switching unit 52 into the transmission device 15, and The power source monitoring unit 51 cuts off the DC power source from the AC / DC converter 16, the battery switching unit 52 supplies the DC power source from the battery 32, and the power distribution unit 53 transmits the DC power source from the battery switching unit 52. 15 can be realized by providing a power supply switching unit 54 that controls to distribute power.
[0029]
(8) In the case of (7), the control information for the power supply switching unit 54 is transmitted from the transmission device 12 on the exchange side as a multiplexed signal, and the signal multiplexing and demultiplexing device 22 in the transmission device 15 on the subscriber side. It can be separated from the multiplexed signal and supplied to the power supply control device 33.
[0030]
【Example】
FIG. 2 shows an embodiment (1) of the present invention, which shows a case where required control is performed in the transmission apparatus on the subscriber side, and the same parts as those in FIG. Reference numeral 21A denotes a specific part of the subscriber transceiver apparatus in the subscriber transceiver apparatus 21, and 25 and 26 are memories. Reference numerals 27 and 28 denote line-controlled subscriber signal lines that connect the memories 25 and 26 and the subscriber transceiver device 21A.
[0031]
A control device 29 controls the operation of the memories 25 and 26 and the setting of the subscriber transmission / reception device 21A. Reference numeral 30 denotes a power supply control device that controls the supply of power to each unit in the transmission device 15.
[0032]
In the embodiment shown in FIG. 2, when the telephone usage rate is low, the control device 29 sets subscriber transmission / reception devices 21A corresponding to a specific number of subscribers in the subscriber transmission / reception device 21. . Such a setting may be performed even during a call or a call. For this reason, a memory is provided on each of the subscriber side and the exchange side, and a call signal and a voice signal from the subscriber or the exchange are temporarily stored. Hold. In this state, the subscriber transceiver device that is not set as the specific subscriber transceiver device 21A in the subscriber transceiver device 21 stops its operation and does not consume power.
[0033]
In this state, with respect to the calling signal from the subscriber 14, is which was temporarily held in memory 25, and for signal multiplexing and called signal separated in the demultiplexing device 22, which Is temporarily stored in the memory 26 and connected to the subscriber transmitting / receiving apparatus 21A via the subscriber-controlled signal lines 27 and 28 under line control. After the setting of the subscriber transmission / reception device 21A is completed, the calling signal and the voice signal are directly connected to the subscriber transmission / reception device 21A without going through the memory.
[0034]
The power supply control device 30 normally supplies DC power from the AC / DC converter 16 to the transmission signal transmission / reception device 23, the signal multiplexing / demultiplexing device 22, and the subscriber transmission / reception device 21. When the usage rate of the telephone is low, DC power is supplied only to the subscriber transceiver device 21A corresponding to a specific number of subscribers set according to the control of the control device 29.
[0035]
Therefore, according to the embodiment shown in FIG. 2, in the transmission apparatus on the subscriber side, when the telephone usage rate is low, the number of active subscriber transmission / reception apparatuses can be reduced. Power consumption can be reduced.
[0036]
FIG. 3 shows a configuration example of the control device in the embodiment of FIG. In the figure, 41 is a service selector switch, which performs switching to set the subscriber transceiver 21A corresponding to a specific number of subscribers when the telephone usage rate is low, according to control information from the outside. Control information for the service changeover switch 41 is, for example, sent as a multiplexed signal from the transmission device 12 on the exchange side via the transmission path 17 and separated in the signal multiplexing and demultiplexing device 22 in the transmission device 15 on the subscriber side. It is given to the control device 29.
[0037]
Reference numeral 42 denotes a phase adjustment unit that adjusts the operation phases in the memories 25 and 26 in accordance with the switching of the service selector switch 41. Reference numerals 43 and 44 denote timing control units which control writing and reading timings in the memories 25 and 26 in accordance with the phase adjustment from the phase adjustment unit 42.
[0038]
Reference numeral 45 denotes a transmitter / receiver switching command unit, which generates a switching command for setting the subscriber transceiver device 21A corresponding to a specific number of subscribers in the subscriber transceiver device 21. An interface unit 46 sends timing control information from the timing control units 43 and 44 to the memories 25 and 26, and transmits a switching command from the transceiver switching command unit 45 to the subscriber transceiver 21.
[0039]
FIG. 4 shows an embodiment (2) of the present invention, where the required transmission control is performed from the transmission apparatus on the exchange side when the transmission apparatus on the subscriber side is installed in an unmanned station. The same elements as those in FIGS. 2 and 7 are denoted by the same reference numerals. Reference numeral 31 denotes a control device having the same configuration as that of the control device 29 shown in the embodiment of FIG. 2, and in response to switching of the service changeover switch based on the control signal, from the interface unit, the memory 25, The timing control information for 26 and the switching command for the subscriber transceiver 21 are generated and input to the signal multiplexing / demultiplexing device 19.
[0040]
The timing control information and the switching command are converted into a multiplexed signal in the signal multiplexing / demultiplexing device 19 and inserted as an additional signal on the transmission signal, and transmitted from the transmission signal transmitting / receiving device 20 via the transmission path 17. Sent to the device 15. In the transmission device 15, these pieces of information are separated in the signal multiplexing and non-multiplexing device 22 and given to the memories 25 and 26 and the subscriber transmission / reception device 21.
[0041]
As a result, the timings of writing and reading in the memories 25 and 26 are controlled, and the subscriber transceiver device 21A corresponding to a specific number of subscribers in the subscriber transceiver device 21 is set. Therefore, according to the embodiment of FIG. 4, when the telephone usage rate is low, the number of subscriber transmission / reception devices that operate can be reduced as in the embodiment shown in FIG. The power consumption in the transmission apparatus can be reduced.
[0042]
FIG. 5 shows an embodiment (3) of the present invention, and shows a case where the present invention is applied to perform necessary control when the transmission device on the subscriber side has a battery as an emergency power source. 2 are indicated by the same reference numerals as in FIG. A battery 32 operates as an emergency power source. Reference numeral 33 denotes a power supply control device that controls the supply of power to each unit in the transmission device 15.
[0043]
The power supply control device 33 normally supplies the DC power from the AC / DC converter 16 based on the commercial power supply to each part in the transmission device 15. The battery 32 is always charged by a DC power source from the AC / DC converter 16.
[0044]
When the commercial power supply is cut off, the power supply control device 33 detects this by cutting off the DC power supply from the AC / DC converter 16, connects the battery 32, and supplies the DC power supply into the transmission device 15. At the same time, a command is sent to the control device 29 so that only the subscriber transmission / reception device 21A corresponding to the specific number of subscribers in the subscriber transmission / reception device 21 is set to the operating state.
[0045]
Thereby, since the low power operation is performed in the transmission device 15, the power consumption of the battery 32 can be reduced, and the usable time in the battery 32 can be extended.
[0046]
FIG. 6 shows a configuration example of the power supply control apparatus in the embodiment of FIG. In the figure, 51 is a power supply monitoring unit, which detects the disconnection of the DC power from the AC / DC converter 16. A battery switching unit 52 supplies DC power from the battery 32 when the power supply monitoring unit 51 detects the disconnection of the DC power from the AC / DC converter 16. A power distribution unit 53 distributes the DC power from the AC / DC converter 16 or the DC power from the battery switching unit 52 to each unit in the transmission device 15.
[0047]
Note that the DC power from the battery switching unit 52 can be forcibly distributed in the transmission device 15 instead of the DC power from the AC / DC converter 16 by external control. In FIG. 6, reference numeral 54 denotes a power supply switching unit that controls the power supply monitoring unit 51 in accordance with control information from the outside to cut off the DC power from the AC / DC converter 16, and Control is performed so that the DC power is supplied from the battery 32, and the power distribution unit 53 is controlled so that the DC power from the battery switching unit 52 is supplied to the transmission device 15.
[0048]
When the transmission device 15 on the subscriber side is installed in an unmanned station, the control information for controlling the power supply switching unit 54 is transmitted as a multiplexed signal from the transmission device 12 on the exchange side, and is transmitted on the subscriber side. In FIG. 15, the signal multiplexing and demultiplexing device 22 separates this from the multiplexed signal and supplies it to the power supply control device 33.
[0049]
【The invention's effect】
As described above, according to the present invention, in a subscriber transmission apparatus in which a plurality of subscriber terminals are concentrated and connected to an exchange station via an optical transmission line or the like, when the telephone usage rate is low, the transmission apparatus on the subscriber side It becomes possible to reduce the power supply in.
[Brief description of the drawings]
FIG. 1 is a diagram showing a basic configuration of the present invention.
FIG. 2 is a diagram showing an embodiment (1) of the present invention.
FIG. 3 is a diagram illustrating a configuration example of a control device in the embodiment of FIG. 2;
FIG. 4 is a diagram showing an embodiment (2) of the present invention.
FIG. 5 is a diagram showing an embodiment (3) of the present invention.
6 is a diagram showing a configuration example of a power supply control device in the embodiment of FIG.
FIG. 7 is a diagram illustrating a conventional subscriber transmission device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Switch 12 Transmission apparatus 14 Subscriber 15 Transmission apparatus 16 AC / DC converter 17 Transmission path 18 Subscriber transmission / reception apparatus 19 Signal multiplexing / demultiplexing apparatus 20 Transmission signal transmission / reception apparatus 21 Subscriber transmission / reception apparatus 21A Subscriber transmission / reception apparatus 22 Signal Multiplexing and non-multiplexing device 23 Transmission signal transmission / reception device 25 Memory 26 Memory 29 Control device 31 Control device 32 Battery 33 Power supply control device 41 Service switch 42 Phase adjustment unit 43 Timing control unit 44 Timing control unit 45 Transceiver switching command unit 51 Power Monitoring Unit 52 Battery Switching Unit 53 Power Distribution Unit 54 Power Switching Unit

Claims

The subscriber-side transmission device in the subscriber transmission device that connects the transmission device on the subscriber side that accommodates a plurality of subscribers and the transmission device connected to the exchange through multiplexed transmission lines,
A memory for holding a call signal and a call signal respectively;
A subscriber transmitter / receiver for transmitting / receiving a signal of a subscriber line;
When the telephone usage rate is lower than a predetermined value, only the subscriber transceiver device corresponding to the specific number of subscribers in the subscriber transceiver device is set to the operating state, and the subscriber transmitting / receiving device is not set to the operating state. The power supply to the subscriber transmission / reception device is switched so that the operation of the power supply is stopped, the memory is operated when the power supply is switched, and the calling signal and the incoming call signal are connected to the subscriber transmission / reception device via the memory. A subscriber transmission device comprising: a control device configured to provide:

A subscriber transmitter / receiver provided with a circuit for transmitting / receiving a signal of a subscriber line corresponding to a plurality of subscribers, a signal multiplexing / demultiplexing device for multiplexing / demultiplexing transmission / reception signals of the subscriber transmitter / receiver, and the signal A transmission device on the subscriber side comprising a transmission signal transmission / reception device for transmitting / receiving signals to be multiplexed / demultiplexed by the multiplexing and demultiplexing devices;
A subscriber transmission / reception apparatus provided with a circuit for transmitting / receiving a signal to / from an exchange corresponding to a plurality of subscribers, a signal multiplexing / demultiplexing apparatus for multiplexing / demultiplexing transmission / reception signals of the subscriber transmission / reception apparatus, A switch-side transmission device including a transmission signal transmission / reception device that transmits and receives signals to be multiplexed / demultiplexed by signal multiplexing and demultiplexing devices,
In the subscriber-side transmission apparatus in the subscriber transmission apparatus for connecting the transmission signal transmission / reception apparatus of the transmission apparatus on the subscriber side and the transmission signal transmission / reception apparatus of the transmission apparatus on the exchange side via a transmission line,
A memory for temporarily holding a signal originating from a subscriber transceiver device of the transmission device on the subscriber side is provided in a front stage of the subscriber transceiver device, and a memory for temporarily retaining a signal to be called to the subscriber transceiver device is provided. Provided after the subscriber transceiver device,
When the telephone usage rate is lower than a predetermined value, only the subscriber transceiver device corresponding to the specific number of subscribers in the subscriber transceiver device is set to the active state, and the subscriber transceiver device is not set to the active state The power supply to the subscriber transmission / reception device is switched so that the operation of the power supply is stopped, the memory is operated when the power supply is switched, and the calling signal and the incoming call signal are connected to the subscriber transmission / reception device via the memory. A subscriber transmission device comprising: a control device configured to provide:

The control device performs switching for setting a subscriber transmission / reception device corresponding to a specific number of subscribers to an operating state according to control information from the outside, and a memory according to the switching of the service switching switch. A phase adjustment unit for controlling the operation phase in the memory, a timing control unit for controlling the timing of writing and reading in the memory in accordance with the phase adjustment from the phase adjustment unit, and a subscriber in accordance with the switching of the service selector switch The transmitter / receiver switching command unit for generating a switching command for setting a subscriber transmitting / receiving device corresponding to the specific number of subscribers to an operating state in the transmitting / receiving device, according to claim 1 or 2. Subscriber transmission equipment.

Control information for the service changeover switch is transmitted as a multiplexed signal from the transmission apparatus on the exchange side, separated in the signal multiplexing and demultiplexing apparatus in the transmission apparatus on the subscriber side, and given to the control apparatus The subscriber transmission device according to claim 3.

3. The subscriber transmission device according to claim 1 or 2, wherein only the subscriber transmission / reception devices corresponding to the specific number of subscribers are set in an operating state, the operation of other subscriber transmission / reception devices is stopped, and the memory is stored. A control device that generates control information to be operated is provided in the transmission device on the exchange side, and the control information is transmitted from the transmission device by a multiplexed signal, and is separated in the signal multiplexing and non-multiplexing devices in the transmission device on the subscriber side A subscriber transmission device that performs each control based on the control information.

The subscriber transmission device according to claim 1 or 2, wherein the DC power is supplied from a battery at the time of a power failure of a commercial power source in an AC / DC converter that supplies a DC power source for operating the transmission device on the subscriber side. when the battery power supply, wherein the controller sets only the operating status subscriber transceiver device corresponding to the specific number of subscribers, to stop the operation of the other subscriber sending and receiving device, so as to operate said memory A subscriber transmission apparatus, characterized in that a power supply control apparatus for controlling is provided.

A power monitoring unit that detects a disconnection of the DC power from the AC / DC converter; a battery switching unit that supplies a DC power from the battery when the DC power supply is detected; and an AC / DC converter. The power distribution unit that distributes the DC power from the battery or the DC power from the battery switching unit into the transmission device, and the DC power from the AC / DC converter is shut off in the power monitoring unit according to control information from the outside And a power switching unit that controls the battery switching unit to supply DC power from the battery and to distribute the DC power from the battery switching unit in the transmission device in the power distribution unit. The subscriber transmission device according to 1.

Control information for the power supply switching unit is transmitted as a multiplexed signal from the transmission apparatus on the exchange side, separated in the signal multiplexing and demultiplexing apparatus in the transmission apparatus on the subscriber side, and supplied to the power supply control apparatus 8. The subscriber transmission apparatus according to claim 7, wherein